For a guided experience that checks over 24 features (including battery health and network connectivity), use the Samsung Members samsung.com Battery and device care Diagnostics : Open the Samsung Members View tests Tests Included
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: Use the "Red," "Green," and "Blue" buttons in the secret menu to check for screen burn-in or dead pixels. The "Touch" test requires you to trace a path across the screen to ensure the digitizer is working perfectly. Maintenance Mode : If you need to send your phone for repair, go to Device Care Maintenance Mode samsung galaxy diagnostics screen tool fixer